This was taken in the Two Oceans Aquarium in Cape Town, South Africa. That fish IS big - about 2 ft long. The kelp plants are probably about 1 storey high.
The 4 DNMC votes I got were kind of expected and I don't mind. I did go out on a limb on this one as fish were not specifically mentioned in the challenge. The competition was pretty stiff in this challenge so 86th is not too bad.
some editing would have removed the mirkiness out of the water that gives this a real aquarium look...I like the composition though with the fish on the bottom third
Coming across sights such as this, I can understand why divers find underwater photography so satisfying. This fish is so strange looking, yet there is something almost human looking about the face! It is a shame the top lighting is a little harsh.
What a face... The challenge description specifically does NOT include fish and insects, I think to avoid being swamped with aquarium and macro shots, but this is clearly shot in the wild, and I hope you get away with it. It's an eerie, eerie image with the almost-human face, and the title does it justice. Good luck!
ETA: not so clearly shot in the wild, more probably shot in a major salt-water aquarium like Monterey Bay or Boston: my point was more, "not a home aquarium"...